body,ul,li{
	margin: 0;
	padding: 0;
}
header,nav,footer,aside,article,section{
	display: block;
}
header{
	width: 100%;
	height:60px;
	line-height: 60px;
	font:24px/60px "微软雅黑";
	color: #fff;
	background: #2dbe60;
}
header .logo,header nav{
	float: left;
}
header .logo{
	margin-left: 10px;
}
header nav li{
	font-size: 14px;
	width: 100px;
	height: 60px;
	list-style: none;
	line-height: 60px;
	float: left;
	text-align: center;
}
header .gn{
	font-size: 14px;
	margin-right: 10px;
	float: right;
}
header nav>ul>li>span{
	display: inline-block;
	transform:rotate(270deg) scale(1.2);/*行内元素无法变形*/
}
.main section{
	position: relative;
	left: 0;
	top: 0;
}
video{
	width: 100%;
};
